AD1954 Analog Devices, AD1954 Datasheet - Page 7

• Manufacturer Part Number: AD1954
• Description: SigmaDSP Digital Audio Processor
• Manufacturer: Analog Devices

Pin No.
(44-MQFP)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
Pin No.
(48-LQFP)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
Mnemonic
NC
MCLK2
MCLK1
MCLK0
DEEMP/
SDATA_AUX
MUTE
DVDD
SDATA2
BCLK2
LRCLK2
SDATA1
BCLK1
DGND
LRCLK1
SDATA0
BCLK0
LRCLK0
CDATA
CCLK
CLATCH
RESETB
AVDD
AGND
NC
VOUTS–
VOUTS+
AGND
VOUTR–
VOUTR+
AVDD
AGND
AVDD
VOUTL+
VOUTL–
AGND
NC
NC
VREF_IN
FILTCAP
ZEROFLAG
SDATAOUT
BCLKOUT
LRCLKOUT
ODVDD
DCSOUT
COUT
MCLKOUT
DGND
PRELIMINARY TECHNICAL DATA
Input/
Output
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
OUT
OUT
OUT
OUT
OUT
OUT
IN
IN
OUT
OUT
OUT
OUT
OUT
OUT
OUT
PIN FUNCTION DESCRIPTIONS
Description
No Connect
Master Clock Input 2 256/384/512/768 f
Master Clock Input 1 256/384/512/768 f
Master Clock Input 0 256/384/512/768 f
Enables 44.1 kHz De-emphasis Filter (Others available through SPI control.)
Mute Signal, initiates volume ramp-down.
Digital Supply for DSP Core, 4.5 V – 5.5 V.
Serial Data Input 2
Bit Clock 2
Left/Right Clock 2
Serial Data Input 1
Bit Clock 1
Digital Ground
Left/Right Clock 1
Serial Data Input 0
Bit Clock 0
Left/Right Clock 0
SPI Data Input
SPI Data Bit Clock
SPI Data Framing Signal
Reset Signal, Active LOW
Analog 5 V supply
Analog GND
No Connect
Negative Sub Analog DAC Output
Positive Sub Analog DAC output
Analog GND
Negative Left Analog DAC Output
Positive Left Analog DAC Output
Analog 5 V Supply
Analog GND
Analog 5 V Supply
Positive Left Analog DAC Output
Negative Left Analog DAC Output
Analog GND
No Connect
No Connect
Connection for filtered AVDD/2
Connection for Noise Reduction Capacitor
Zero Flag Output. Hi when both left and right channels are 0 for 1024 frames
Serial Data MUX Output
Bit Clock MUX Output
Left/Right Clock MUX Output
Digital Supply Pin for Output Drivers, 2.5 V – 5.5 V
Data Capture Serial Output for Data Capture Registers; use in
conjunction with selected LRCLK and BCLK to form a 3-wire output
SPI Data Output, Three-stated When Inactive
Master Clock Output 512/256 f
Digital Ground
S
(Frequency selected by SPI Register.)
S
S
S
AD1954